Vulnerability · Published Jun 4, 2021 · Assigned by cisco

CVE-2021-1527Cisco Webex Player Memory Corruption Vulnerability

Medium 5.3

In plain English

A medium-severity memory corruption in Cisco Webex Meetings from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.6%top 52.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in Cisco Webex Player for Windows and MacOS could allow an attacker to cause the affected software to terminate or to gain access to memory state information that is related to the vulnerable application. The vulnerability is due to insufficient validation of values in Webex recording files that are stored in Webex Recording Format (WRF). An attacker could exploit this vulnerability by sending a malicious WRF file to a user as a link or email attachment and then persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to crash the affected software and view memory state information.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco Webex Meetings	n/a

Weakness: CWE-119 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

References

20210602 Cisco Webex Player Memory Corruption Vulnerability vendor-advisory, x_refsource_CISCO